sometimes i have the feeling that their isn't only a "aggressiness gen", and their is also a gen for "risky passes".
I have a point guard who started with an 49:1 As/To ratio in his first season(against much stronger competition), and also in the coming season mostly make stats around 7:1 even when he was just 2-3 Season a top player in my league:
http://www.buzzerbeater.com/player/3165648/hofplayer.aspx...And i also got some players who made relativ lot To, with good skills. So maybe it is "genetic" or there are lot of other factors in it beside the skills(or maybe even a huge random number^^)